/*
 * Copyright (c) 2020, Yanzi Networks AB.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#ifndef RPL_NBR_POLICY_H_
#define RPL_NBR_POLICY_H_

#include "contiki.h"

#ifdef RPL_NBR_POLICY_CONF_MAX_NEXTHOP_NEIGHBORS
#define RPL_NBR_POLICY_MAX_NEXTHOP_NEIGHBORS RPL_NBR_POLICY_CONF_MAX_NEXTHOP_NEIGHBORS
#else /* RPL_NBR_POLICY_CONF_MAX_NEXTHOP_NEIGHBORS */
/* Leave 3 spots for candidate parents incl. default route. */
#define RPL_NBR_POLICY_MAX_NEXTHOP_NEIGHBORS MAX(NBR_TABLE_MAX_NEIGHBORS - 3, 0)
#endif /* RPL_NBR_POLICY_CONF_MAX_NEXTHOP_NEIGHBORS */

int rpl_nbr_policy_get_free_nexthop_neighbors(void);

#endif /* RPL_NBR_POLICY_H_ */
